Wrench.



C. ROUBINEK.

WRENCH.

- APPLIOATION FILED JUNE 17, 1912. 1 056 581 Patented Mar.18, 1913. 2sums-sum 1.

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ATTORN EYS G. ROUBINEK WRENCH.

APPLICATION FILED JUNE 17, 1912.

1 05 5 7 Patented Mar. 18-, 1913. v

2 SHEETS-SHEET 2.

WITNESSES 6 INVENTOR M BY ATTORNEYS CARL ROUBINEK, OF MILWAUKEE,WISCONSIN.

WRENCH.

Specification of Letters Patent.

Application filed June 17, 1912.

Patented Mar. 18, 1913.

Serial No. 704,138.

To all whom it may concern Be it known that I, CARL .ROUBINEK, a subjectof the Emperor of Austria-Hungary, residing at Milwaukee, in the countyof Milwaukee and State of Wisconsin, have invented certain new anduseful Improvements in renches, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to wrenches, and the primary object of myinvention isto provide a nut wrench with a novel adjusting mechanismthat permits of the adjustable jaw of the wrench being easily andquickly shifted and locked in an adjusted position.

A further object of this invention is to provide a wrench of the abovetype that is durable and highly efiicient for the purposes for which itis intended.

With the above and other objects in view, the invention resides in anovel construction, combination and arrangement of parts to behereinafter specifically described and then claimed.

Reference will now be had to the drawing, wherein like numerals denotecorresponding parts throughout the several views, in which Figure 1 is aside elevation of a wrench in accordance with this invention. Fig.2 is alongitudinal sectional view of the same. Fig. 3 is a front elevation ofthe wrench partly broken away and partly in section. Fig. 4 is aperspective of the detached adjustable jaw. Fig. 5 is a longitudinal sect-ional view of a portion of the wrench. Fig. i 6 is a perspective ofthe detached locking member. Fig. 7 is a similar view of an actuatinglever, and Fig. 8 is a perspective view of a detached housing adapted toform part of the wrench.

A wrench in accordance with this invention comprises a channel shapedshank 1 that has the side walls 2 thereof provided with longitudinalslots 3, adjacent to the outer end of the shank. The outer end of theshank has a stationary or integral jaw 4 that is of a greater width thansaid shank. The jaw 4 presents a fiat gripping surface 5 at the frontside of the shank.

The inner end f he shank 1 is reduced,

as at 6 and cut away as at 7 to reduce the weight of the shank. Theinner end of the shank 1 is slotted, as at-8 and'the rear side of saidshank, adjacent to the reduced end thereof has a longitudinal slot 9.The rear wall of the shank 1 at one side of the slot 9 is provided withteeth 10, and the same wall has transverse teeth 11 extending from theouter end of the slot 9 to a point in proximity to the jaw 4.

The adjustable jaw body is designated 12 and the jaw body is slidablymounted upon the front side of the shank 1. The jawbody 12. hasa fiatsurface 13 confronting the gripping surface 5 of the jaw 4 andcooperating therewith in gripping the facets of a nut. The rear sideofthe adjustable jaw body 12 has a longitudinal tongue 14 extending intothe channel of the shankl, and said tongue has a longitudinal recess 15,transverse alining openings 16 and 17 apertured lugs 18 connected by apin 19, and a longitudinal rack 20. The adjustable jaw body 12 has alongitudinal slot 21, and the rack 20 is set to one side of said slotand extends from theinner end of the adis the camv end 27 of anactuating lever 28.

This lever has a barrel 29 loosely mounted upon a transverse pin 30,carried by the tongue 14, said pin extending through opening 31 providedtherefor in said tongue. The end of the lever 28 extends into the slot21 of the adjustable jaw body and is provided with a finger'piece 32whereby said lever can'be actuated toswing the block 24 of the lockingmember out of engagement with the shank 1, whereby the adjustable jawbody can be moved upon said shank. The ends of the pin 22 are providedwith revoluble rollers 33 and these rollers engage the Walls of the slot3,

Arrangedwithin the opening 16 of the tongue 14 is a transverse pin 34and revolu lily mounted upon the ends of said pin are rollers 35,similar to the rollers 33. The rollers are inclosed in the slots 3 byside plates 36 that are counter-sunk in the sides of the shank 1 andsecured therein by screws or other fastening means, as at 37.

Secured to the front side edges of the ad justable jaw body 12 by screws38 or other fastening means is a strap 39 that embraces the shank 1 andassists in retaining the adjustlable jaw body 12 in engagement therewitArranged in the inner end of the shank 1 isa housing 40 that hasapertured lugs 41 and 42. The apertured lug 41 is connected by a coiledspring 43 to the transverse pin 19 of the adjustable jaw body 12. Theapertured lug 42 is connected by a coiled spring 44 to an apertured lug45 arranged in the inner end of the shank 1, as best shown in Figs. 2and 5. The housing 40 has a longitudinal groove 46 and the side of saidhousing is inclosed by a side plate 47. Revolubly mounted in the housing40 is a pinion 48 and the shaft 49 of said pinion protrudes from thehousing and is provided with a large toothed wheel 50 that engages therack 20 and the teeth 10. The pinion 48 meshes with a rack-bar 51 thatis slidably mounted in the groove 46 of the housing 40. The rack-bar 51extends out of the housing and is provided with a finger piece 52,whereby said rackbar can be pulled outwardly. The housing extends intothe longitudinal slot 9 in the rear wall of shank 1 and this slotassists in guiding said housing during its movement. The inner end ofthe rack-bar 51 has a longitudinal socket 53 and arranged in said socketis a coiled rectractile spring 54 that has one end thereof attached tothe housing 40 and the opposite end thereof to the rack-bar 51. Thisspring holds the rack-bar 51 normally in the housing 40. The inner endof the housing 40 is cut away, as at 55 to provide clearance for therack 20.

Arranged upon the sides of the reduced end of the shank 1 are handleplates 56 that are secured to the shank by screws 57 or other fasteningmeans.

In operation, the actuating lever 28 is first moved to shift the lockingmember 23 out oflengagement with the shank 1. The finger piece 52 of therack-bar 51 is next pulled outwardly to revolve the pinion 48 andthetoothed Wheel 50. As this wheel meshes with the rack 20, the rack andthe adjustable jaw body 12 will be moved toward the inner end of theshank and simultaneous with this movement, the housin 40 is moved towardthe end of the shank by reason of the wheel 50 meshing with the teeth10. In other words, there is adoulole movement within the shank 1 whichpermits of the adjustable jaw body 12 being quickly shifted. The springs43 and 44 properly balance and guide the housing 40 within the shank 1.

It is thought that .the operation of the wrench will be apparentwithout. further description, and I would have it understood that thestructural elements are susceptible to such variations as fall withinthe scope of the appended claims.

\Vhat I claim is 1. A wrench comprising a channel shank, a jaw carriedby the outer end thereof, said shank having longitudinal slots formed inthe side walls thereof, an adjustable jaw body having a tongue extendinginto the channel of said shank and provided with a recess, pins arrangedtransversely of said adjustable jaw body, revoluble rollers carried bythe ends of said pins and engaging the walls of said slots, side platesinclosing said rollers, a locking member pivotally mounted in the recessof the tongue of said jaw body and adapted to engage the rear wall ofsaid shank, an actuating lever pivotally mounted in the recess of thetongue of said jaw body and adapted to be moved to shift said lockingmember out of engagement with the wall of said shank, and means arrangedwithin said shank and including a rack-bar, pinions and a rack carriedby said jaw body for adjusting said jaw body when said locking member isreleased.

2. A wrench comprising a channel shank having the side walls thereofprovided with longitudinal slots, a aw carried by the outer end of saidshank, an adjustable jaw body slidably mounted upon the front side ofsaid shank, a tongue carried. by said adjustable body and extending intothe channel of said shank, said tongue having a recess formed therein, alocking member pivotally mounted in said recess and adapted to engagethe rear wall of said shank, an actuating lever pivotally mounted in therecess of said tongue and adapted to move said locking member, a housingmovably mounted in the channel of said shank, a rack carried by saidadjustable jaw body and extending in proximity to said housing, andmeans carried by said housing and engaging said rack for adjusting saidjaw body when the look ing member thereof is released.

3. A wrench comprisi'ng a channel shank having the side Walls thereofprovided with longitudinal slots, a aw carried by the outer end of saidshank, an adjustable jaw body slidably mounted upon the front side ofsaid shank, a tongue carried by said adjustable jaw body and extendinginto the channel of said shank, a transverse pin carried by said tongue,rollers revolubly mounted upon the ends -of said pins and bearingagainst walls of said slots, side plates connected to the housing, arack, a rack-bar and pinions for sides of said shank and inclosing saidslots, adjusting said adjustable jaw body. 10 a locking member pivotallysupported by In testimony whereof I afiiX my signature said tongue andadapted to engage the rear in the presence of tWo Witnesses.

Wall of said shank, an actuating lever piv- CARL ROUBINEK. otallysupported by said tongue and engag- Witnesses:

ing said locking member, and means ar- CHESTER HAMMOND,

ranged Within said shank and including a LASARD K0121.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

